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In this age of gadgets and portable devices, one needs batteries. Most of the consumer electronics we buy today use internal batteries, but sometimes we need rechargeable batteries to save money and time. Here is a list of different types of rechargeable batteries available. Size of battery generally doesn't matter because a bigger battery of the same size will always hold a higher charge.

• Nickel-cadmium battery (NiCd or NiCad)
  Created in 1899, by Waldemar Jungner of Sweden. Using nickel oxide hydroxide and metallic cadmium as electrodes. Cadmium is a toxic element, and was banned for most uses by the European Union in 2004. Nickel-cadmium batteries have been almost completely superseded by nickel-metal hydride batteries (NiMH). They care be charged up 1500 times. Due to their low power storage capacities, they are not the best suited for electronics that need lot of energy like a digital camera with a flash.
• Nickel-metal hydride battery (NiMH)
  The battery has a hydrogen-absorbing alloy for the negative electrode instead of cadmium. It was developed in the 1960s. NiMH batteries can be charged upto 1000 times and can hold decent amount of power. NiMH batteries are your good overall rechargeable batteries.
• Lithium-ion battery (Li-ion)
  Li-ion batteries are probably best battery type you can get. They will hold lot of power, will not discharge too fast and can run electronics that need good amount of power. Li-ion batterties will also cost more. The technology behind lithium-ion battery has not yet fully reached maturity. However, the batteries are the type of choice in many consumer electronics and have one of the best energy-to-mass ratios and a very slow loss of charge when not in use. The popularity of lithium-ion batteries has spread as their technology continues to improve. Note: Li-ion AA or small batteries might not be the right replacement for your small consumer devices. They generally run a higher voltage and can and will damage your device if your device is not designed for Li-ion batteries.

Keywords : rechargeable batteries